/**
 * Copyright 2011 Joe Choi, All rights reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package tec.data.persistence.jdbc;

import tao.data.persistence.Field;
import tao.data.persistence.QueryResult;
import tao.data.persistence.Record;
import tao.data.structure.List;
import tec.data.persistence.RecordBuffer;

/**
 * @author Joe Choi
 */
public class JDBCQueryResult implements QueryResult {
	public JDBCQueryResult(ResultSetAdapter adapter) {
		if(adapter == null) throw new IllegalArgumentException("QueryResult: Adapter may not be null!");
		this.adapter = adapter;
		this.buffer = new JDBCRecordBuffer(adapter);
	}
	
	@Override
	public List<Field> getFields() {
		return(adapter.getHeading());
	}

	@Override
	public void close() {
		adapter.close();
	}	
	
	@Override
	public boolean hasNext() {
		return(buffer.hasNext());
	}

	@Override
	public Record next() {
		return(buffer.next());
	}
	
	private ResultSetAdapter adapter;
	private RecordBuffer buffer;
}
